Izvestiya, Atmospheric and Oceanic Physics

, Volume 54, Issue 7, pp 723–729 | Cite as

Factors of Solar Activity Enhance Locomotor and Exploratory Behavior in Rats

  • V. N. MukhinEmail author
  • K. I. PavlovEmail author
  • I. N. AbdurasulovaEmail author
  • V. M. KlimenkoEmail author


According to the literature, solar activity affects the functioning of the human brain. However, its effect has not been studied on experimental animals. The purpose of this study was to investigate whether factors of solar activity influence the behavior of rats. From October 26 to December 24, 2011, the behavior of individual rats or small groups of them (N = 19) was recorded in an open field test and operant food-uptake behavior test. Parameters of solar activity were obtained from public databases on the Internet. Results of the correlation analysis have demonstrated that the number of sectors travelled by the rats in the open field test, number of holes they investigated, and number of food pellets they earned while learning a food-uptake task were positively associated with solar activity on the day of the study and in the days before and after that. Such associations were revealed for the number of sunspots, the intensity of solar radiation in the radio range, and number of solar flares in the X-ray and Hα ranges. Factor analysis made it possible to distinguish two factors positively associated with the behavior of rats. One of them closely correlated with the solar radio flux and can therefore be presumably attributed to its electromagnetic component. The other is closely related to the 3-h planetary index of oscillations of the Earth’s magnetic field K, and this indicates its corpuscular nature. These results correspond to the literature data on the association between the parameters of solar and geomagnetic activity and the characteristics of electrical activity of the brain of humans and animals. The behavior of rats is associated most closely with the number of sunspots on the day of the study, the parameter of which significantly correlates with both factors of solar activity. Therefore, this index can be used to consider the influence of solar activity on the behavior of rats in experimental practice.


solar activity brain rats behavior 



  1. 1.
    Aleksandrov, V.V., Ekologicheskaya rol’ elektromagnetizma (Environmental Role of Electromagnetism), St. Petersburg: Politekh. univ., 2010.Google Scholar
  2. 2.
    Alvarez, A.S., Effects of extremely low frequencies on human health, Proc. Adv. Res. Sci. Areas, 2012, no. 1, pp. 2118–2123.Google Scholar
  3. 3.
    Arkhangel’skaya, E.V., Grabovskaya, E.Yu., and Konoval’chuk, V.N., Effect of natural heliogeomagnetic fluctuations on bioelectric activity of brain in man, Uch. Zap. Tavricheskogo nats. un-ta im. V.I. Vernadskogo, 2006, vol. 19.Google Scholar
  4. 4.
    Belov, D.R., Kanunikov, I.E., and Kiselev, B.V., Dependence of human EEG spatial synchronization on the geomagnetic activity on the day of experiment, in Ros. fiziol. zhurn. 1998, vol. 84, no. 8, pp. 761–774.Google Scholar
  5. 5.
    Cherry, J.D., Liu, B., Frost, J.L., Lemere, C.A., Williams, J.P., Olschowka, J.A., and O’Banion, M.K., Galactic cosmic radiation leads to cognitive impairment and increased Aβ plaque accumulation in mouse model of Alzheimer’s disease, PloS ONE, 2012, vol. 7, no. 12, e53275.CrossRefGoogle Scholar
  6. 6.
    Chizhevskii, A.L., Zemnoe ekho solnechnykh bur’ (The Terrestrial Echo of Solar Storms), Moscow: Mysl’, 1976.Google Scholar
  7. 7.
    Chizhevskii, A.L., Kosmicheskii pul’s zhizni: Zemlya v ob’’yatiyakh Solntsa. Geliotaraksiya (Cosmic Pulse of Life: the Earth in Solar Arms. Heliotaraxy), Moscow: Mysl’, 1995.Google Scholar
  8. 8.
    Cohen, M. and Wohlers, A., Is there a relationship between sunspot numbers and psychiatric admissions?, Proc. of the 2nd International Conference on Bioelectromagnetism, 1998, pp. 149–150.Google Scholar
  9. 9.
    Davis, G.E., Jr. and Lowell, W.E., Solar cycles and their relationship to human disease and adaptability, Med. Hypotheses, 2006, vol. 67, no. 3, pp. 447–461.CrossRefGoogle Scholar
  10. 10.
    Gould, T.D., Dao, D.T., and Kovacsics, C.E., The open field test, in Mood and Anxiety Related Phenotypes in Mice, Gould, T.D., Ed., Totowa, NJ: Humana, 2009, pp. 1–20.CrossRefGoogle Scholar
  11. 11.
    Kameneva, E.G., Sofronov, G.A., and Zhirkov, A.M., The role of weather factors in changing the psychophysiological state of healthy humans and ischemic heart disease patients under solar effect, Med. Akad. Zh., 2014, vol. 14, no. 1, pp. 66–73.Google Scholar
  12. 12.
    Kanunikov, I.E., Belov, D.R., and Getmanenko, O.V., Influence of geomagnetic activity on human EEG, Ekol. Chel., 2010, no. 6, pp. 6–11.Google Scholar
  13. 13.
    Khodanovich, M.Yu., Krivova, N.A., Gul’, E.V., and Zelenskaya, A.E., Influence of the long-term decrease in the geomagnetic field level on bioelectric activity of the brain of laboratory rats, Vestn. Tomsk. Gos. Univ., 2011, no. 348, pp. 155–160.Google Scholar
  14. 14.
    Khorseva, N.I., Using psychophysiological indices to estimate the effect of cosmophysical factors (review), Izv., Atmos. Ocean. Phys., 2013, vol. 49, no. 8, pp. 839–852.CrossRefGoogle Scholar
  15. 15.
    Moldwin, M., An Introduction to Space Weather, Cambridge: Cambridge Univ. Press, 2008. Google Scholar
  16. 16.
    Moscow Neutron Monitor. main.htm.Google Scholar
  17. 17.
    Papathanasopoulos, P., Preka-Papadema, P., Gkotsinas, A., Dimisianos, N., Hillaris, A., Katsavrias, C., Antonakopoulos, G., Moussas, X., Andreadou, E., Georgiou, V., Papachristou, P., and Kargiotis, O., The possible effects of the solar and geomagnetic activity on multiple sclerosis, Clin. Neurol. Neurosurg., 2016, vol. 146, pp. 82–89.CrossRefGoogle Scholar
  18. 18.
    Pavlov, K.I. and Kamenskaya, V.G., Influence of geocosmic and meteorological factors on psychological and psychophysiological characteristics of perceptual–motor reaction and symbol reaction in young women with different juvenility levels, Soznanie Fiz. Real’nost’, 2013, vol. 18, no. 5, pp. 21–29.Google Scholar
  19. 19.
    Pavlov, K.I. and Kamenskaya, V.G., Impact of ecological factors on spectral characteristics of dynamical functionality of human brain asymmetry, Psikhol. Obraz. Polikul’t. Prostranstve, 2014, no. 3, pp. 40–51.Google Scholar
  20. 20.
    Pavlov, K.I., Mukhin, V.N., Kamenskaya, V.G., and Klimenko, V.M., Dependence of cerebral-cortex activation in women on environmental factors, Izv., Atmos. Ocean. Phys., 2015, vol. 52, no. 7, pp. 737–744.CrossRefGoogle Scholar
  21. 21.
    Raps, A., Stoupel, E., and Shimshoni, M., Geophysical variables and behavior: LXIX. solar activity and admission of psychiatric inpatients, Percept Mot Skills, 1992, vol. 74, no. 2, pp. 449–450.CrossRefGoogle Scholar
  22. 22.
    Sajedi, S.A. and Abdollahi, F., Geomagnetic disturbances may be environmental risk factor for multiple sclerosis: An ecological study of 111 locations in 24 countries, BMC Neurol., 2012, vol. 12, id 100.Google Scholar
  23. 23.
    Saroka, K.S., Caswell, J.M., Lapointe, A., and Persinger, M.A., Greater electroencephalographic coherence between left and right temporal lobe structures during increased geomagnetic activity, Neurosci. Lett., 2014, vol. 560, pp. 126–130.CrossRefGoogle Scholar
  24. 24.
    Space Weather Prediction Center. http://www.swpc. Scholar
  25. 25.
    Stoupel, E., Considering space weather forces interaction on human health: The equilibrium paradigm in clinical cosmobiology—is it equal?, J. Basic Clin. Physiol. Pharmacol., 2014, vol. 26, no. 2, pp. 147–151.Google Scholar
  26. 26.
    Stoupel, E.G., Petrauskiene, J., Kalediene, R., Sauliune, S., Abramson, E., and Shochat, T., Space weather and human deaths distribution: 25 years’ observation (Lithuania, 1989–2013), J. Basic Clin. Physiol. Pharmacol., 2015, vol. 26, no. 5, pp. 433–441.Google Scholar
  27. 27.
    World Data Center for Geomagnetism, Kyoto. http://wdc. Scholar

Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  1. 1.Federal State Budgetary Scientific Institution “Institute of Experimental Medicine”St. PetersburgRussia

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